True is the name for whatever idea starts the verification process, useful is the name for its completed function in experience

When you have broken the reality into concepts you never can reconstruct it in its wholeness.

We divert our attention from disease and death as much as we can; the slaughterhouses are huddled out of sight and never mentioned, so that the world we recognize officially in literature and in society is a poetic fiction far handsomer, cleaner and better than the world that really is.

The science of logic never made a man reason rightly, and the science of ethics never made a man behave rightly. The most such sciences can do is to help us to catch ourselves up and check ourselves, if we start to reason or to behave wrongly; and to criticise ourselves more articulately after we have made mistakes.

Wisdom is learning what to overlook.

In the acquisition of a new habit, or the leaving off of an old one, we must take care to launch ourselves with as strong and decided an initiative as possible.

Seek out that particular mental attribute which makes you feel most deeply and vitally alive.