The scientist is activated by a wonder and awe before the mysterious comprehensibility of the universe which is yet finally beyond his grasp. In its profoundest depths it is inaccessible to man.
Be sure that it is not you that is mortal, but only your body. For that man whom your outward form reveals is not yourself; the spirit is the true self, not that physical figure which and be pointed out by your finger.
If your knowledge teaches you not to rise above human weakness and misery and lead your fellow man on the right path, you are indeed a man of little worth and will remain such till Judgment Day.
Few men can be said to have inimitable excellencies: let us watch them in their progress from infancy to manhood, and we shall soon be convinced that what they attained was the necessary consequence of the line they pursued, and the means they used.
Examine the life of the best and most productive men and nations, and ask yourselves whether a tree which is to grow proudly skywards can dispense with bad weather and storms. Whether misfortune and opposition, or every kind of hatred, jealousy, stubbornness, distrust, severity, greed, and violence do not belong to the favourable conditions without which a great growth even of virtue is hardly possible?
When it is impossible to stretch the very elastic threads of historical ratiocination any farther, when actions are clearly contrary to all that humanity calls right or even just, the historians produce a saving conception of 'greatness.' 'Greatness,' it seems, excludes the standards of right and wrong. For the 'great' man nothing is wrong, there is no atrocity for which a 'great' man can be blamed.
It behooves every man to remember that the work of the critic is of altogether secondary importance, and that, in the end, progress is accomplished by the man who does things.
Man desired concord; but nature knows better what is good for his species; she desires discord. Man wants to live easy and content; but nature compels him to leave ease... and throw himself into roils and labors.
Contemplative and bookish men must of necessity be more quarrelsome than others, because they contend not about matter of fact, nor can determine their controversies by any certain witnesses, nor judges. But as long as they go towards peace, that is Truth, it is no matter which way.
Far more indispensable then food for the physical body is spiritual nourishment for the soul. One can do without food for a considerable time, but a man of the spirit cannot exist for a single second without spiritual nourishment.
Miserable is the man who loves a woman and takes her for his wife, pouring at her feet the sweat of his skin and the blood of his body and the life of his heart, and placing her in the hands of the fruit of his toil and the revenue of his diligence; for when he slowly wakes up, he finds that the heart that he endeavored to buy is given away freely and in sincerity to another man for the enjoyment of its hidden secrets and deepest love.