Nothing is so fatiguing as the eternal hanging on of an uncompleted task.

To be fertile in hypotheses is the first perquisite of creativity and to be willing to throw them away the moment experience contradicts them is the next.

For I had often said that the best argument I knew for an immortal life was the existence of a man who deserved one as well as Child did.

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

Once you accept an idea, it's an idea whose time has come.

The hell to be endured hereafter, of which theology tells, is no worse than the hell we make for ourselves in this world by habitually fashioned our characters in the wrong way.

There is no worse lie than a truth misunderstood bu those who hear it.