Be gentle to all and stern with yourself.
Problems are not stop signs, they are guidelines.
Begin to be now what you will be hereafter.
If you think you can do it, you can.
The wise does at once what the fool does at last.
Wherever you are - be all there.
Always desire to learn something useful.
The dog that trots about finds a bone.
Without hard work, nothing grows but weeds.
You never know what motivates you.
Nuclear arms and atomic power represent a technology in which coexistence with man is extremely difficult.