Wisdom without love is like having lungs but no air to breathe. Do not seek wisdom in order to acquire knowledge but in order to live and love more fully.
The necessity of knowing a little about a great many things is the most grievous burden of our day. It deprives us of leisure on the one hand, and of scholarship on the other.
Nobody knows how the stand of our knowledge about the atom would be without him. Personally, [Niels] Bohr is one of the amiable colleagues I have met. He utters his opinions like one perpetually groping and never like one who believes himself to be in possession of the truth.
If we will not interfere with our thought, but will act entirely, or see how the thing stands in God, we know the particular thing, and every thing, and every man.
By all means sometimes be alone; salute thyself; see what thy soul doth wear; dare to look in thy chest; and tumble up and down what thou findest there.