Time has no independent existence apart from the order of events by which we measure it.

There is nothing divine about morality, it is a purely human affair.

Condemnation before investigation is the highest form of ignorance.

It is nothing short of a miracle that modern methods of teaching have not yet entirely strangled that sacred spirit of curiosity and inquiry, for this delicate plant needs freedom no less than stimulation.

Human beings, vegetables, or cosmic dust, we all dance to a mysterious tune, intoned in the distance by an invisible piper.

The moon does not simply disappear when we are not looking at it.

Earnestly I must exert myself in order to return as much as I have received.