Read not to contradict and confute; nor to believe and take for granted; nor to find talk and discourse; but to weigh and consider. Some books are to be tasted, others to be swallowed, and some few to be chewed and digested: that is, some books are to be read only in parts, others to be read, but not curiously, and some few to be read wholly, and with diligence and attention.
For first of all we must prepare a Natural and Experimental History, sufficient and good; and this is the foundation of all; for we are not to imagine or suppose, but to discover, what nature does or may be made to do.
Then bless thy secret growth, nor catch At noise, but thrive unseen and dumb; Keep clean, be as fruit, earn life, and watch, Till the white-wing'd reapers come.
He that hath wife and children hath given hostages to fortune, for they are impediments to great enterprises, either of virtue or mischief. Certainly the best works and of greatest merit for the public have proceeded from the unmarried or childless men, which both in affection and means have married and endowed the public. He was reputed one of the wise men that made answer to the question, when a man should marryA young man not yet, an elder man not at all.
But by far the greatest obstacle to the progress of science and to the undertaking of new tasks and provinces therein is found in this-that men despair and think things impossible.