The child takes most of his nature of the mother, besides speech, manners, and inclination.

No place, no company, no age, no person is temptation-free; let no man boast that he was never tempted, let him not be high-minded, but fear, for he may be surprised in that very instant wherein he boasteth that he was never tempted at all.

Do not try to produce an ideal child, it would find no fitness in this world.

No philosopher's stone of a constitution can produce golden conduct from leaden instincts.

In science the important thing is to modify and change one's ideas as science advances.

When a man's knowledge is not in order, the more of it he has the greater will be his confusion.

No one can be perfectly happy till all are happy.