All good thoughts and ideas mean nothing without action.

How little can we foresee the consequences either of wise or unwise action, of virtue or of malice. Without this measureless and perpetual uncertainty, the drama of human life would be destroyed.

I never worry about action, but only about inaction.

You may never know what results come of your actions, but if you do nothing, there will be no results.

Life consists in penetrating the unknown, and fashioning our actions in accord with the new knowledge thus acquired.

Action is more generally understood than words.