I could never say in the morning, "I have a headache and cannot do thus and so". Headache or no headache, thus and so had to be done.
You must do the things you think you cannot do.
Life must be lived and curiosity kept alive. One must never, for whatever reason, turn his back on life.
Work is always an antidote to depression.
Anyone who thinks must think of the next war as they would of suicide.
As with all children, the feeling that I was useful was perhaps the greatest joy I experienced.