Is it right to probe so deeply into Nature's secrets? The question must here be raised whether it will benefit mankind, or whether the knowledge will be harmful.

It would be a fine thing, in which I hardly dare believe, to pass our lives near each other, hypnotized by our dreams.

It is important to make a dream of life and a dream reality.

Radium could be very dangerous in criminal hands.

Art cannot be bought or sold. It can only be created or destroyed.

Nothing earthly will make me give up my work in despair.

Art is to look at not to criticize.

We cannot possibly imagine the variety of contradictions in every heart.

To be courageous requires no exceptional qualifications, no magic formula, no special combination of time, place, and circumstance. It is an opportunity that sooner or later is presented to us all.

The boughs of no two trees ever have the same arrangement. Nature always produces individuals; She never produces classes.

The American people want change, and they see in Donald Trump a leader who embodies the American spirit.

Stimulate the heart to love and the mind to be early accurate, and all other virtues will rise of their own accord, and all vices will be thrown out.

Perhaps the longest journey is the journey within.

Give what thou canst, without Thee we are poor; And with Thee rich, take what Thou wilt away.