A wise man is strong.

And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of ...

And if one prevail against him, two shall withstand him; and a three-fold cord is not quickly broken.

And, weaponless himself, Made arms ridiculous.

Concentration is the secret of strength.

Don't expect to build up the weak by pulling down the strong.

Don't hit at all if it is honorably possible to avoid hitting, but never hit soft.

For the Egyptians shall help in vain, and to no purpose: therefore have I cried concerning this, Their strength is to sit still.

Hast thou an arm like god?

He knows not his own strength that hath not met adversity.