Time is a strange thing. It is a whimsical tyrant, which in every century has a different face for all that one says and does.

One can't dull a project better than by discussing it repeatedly.

Nature does not suffer her veil to be taken from her, and what she does not choose to reveal to the spirit, thou wilt not wrest from her by levers and screws.

Every day we should hear at least one little song, read one good poem, see one exquisite picture, and, if possible, speak a few sensible words.

Gray is the color of all theory

Whoever strenuously endeavors, him we can rescue.

When I consider the narrow limits within which our active and inquiring faculties are confined; when I see how all our energies are wasted in providing for mere necessities, which again have no further end than to prolong a wretched existence; and then that all our satisfaction concerning certain subjects of investigation ends in nothing better than a passive resignation... when I consider all this... I am silent.