Is it life, I ask, is it even prudence, To bore thyself and bore the students?

Men's prejudices rest upon their character for the time being and cannot be overcome, as being part and parcel of themselves. Neither evidence nor common sense nor reason has the slightest influence upon them.

The history of science is science itself; the history of the individual, the individual.

We must always change, renew, rejuvenate ourselves; otherwise, we harden.

Every day look at a beautiful picture, read a beautiful poem, listen to some beautiful music, and if possible, say some reasonable thing.

The soul of the Christian religion is reverence.

The assault of our enemies is not part of our life; it is only part of our experience; we throw it off and guard ourselves against it as against frost, storm, rain, hail, or any other of the external evils which may be expected to happen.