After a storm comes a calm.
The dog that trots about finds a bone.
If you think you can do it, you can.
Leap, and the net will appear.
By failing to prepare, you are preparing to fail.
Either you run the day or the day runs you.
Know or listen to those who know.
Begin to be now what you will be hereafter.
The most effective way to do it, is to do it.
The wise does at once what the fool does at last.
The frontiers of knowledge in the various fields of our subject are expanding at such a rate that, work as hard as one can, one finds oneself further and further away from an understanding of the whole.