The bare fact that language consists of sounds which are mutually intelligible is enough of itself to show that its meaning depends upon connection with a shared experience.

Expertness of taste is at once the result and reward of constant exercise of thinking.

The most important attitude that can be formed is that of desire to go on learning.

Since in reality there is nothing to which growth is relative save more growth, there is nothing to which education is subordinate save more education.‎

A person who is trained to consider his actions, to undertake them deliberately, is in so far forth disciplined. Add to this ability a power to endure in an intelligently chosen course in the face of distraction, confusion, and difficulty, and you have the essence of discipline.

The educational process has no end beyond itself; it is its own end.

We have three approaches at our disposal: the observation of nature, reflection, and experimentation. Observation serves to assemble the data, reflection to synthesise them and experimentation to test the results of the synthesis. The observation of nature must be assiduous, just as reflection must be profound, and experimentation accurate. These three approaches are rarely found together, which explains why creative geniuses are so rare.