知人者智,自知者明。
勝人者有力,自勝者強。
知足者富。強行者有志。
不失其所者久。死而不亡者壽。

Knowing others is intelligent
Knowing yourself is wise
Controlling others is strong
Controlling yourself is powerful

Contentedness is rich
Perseverance is determination
Integrity lasts long
Spiritual legacy begets immortality
(From http://tao-meditation.blogspot.com/2013/12/inspired-by-tao-te-ching-chapter-33.html?m=1)

Image result for image of inner strength
The image is from 3 Simple Ways To Build Inner Strength.

Lao Tzu makes it clear that the “inner-self ” is much more important than the outside factors.

He who understands other people is merely intelligent; he who understands himself is genuinely enlightened.

He who overcomes other people has external strength; he who overcomes himself possesses inner power. External strength never lasts. Inner power resides within and lasts forever so it makes you more powerful.

Furthermore, he mentions the significance of contentment, perseverance, and keeping your integrity (knowing your position).

The last and not the least that keep you self-searching instead of finding outer material, and help you not to perish but to be eternally present.