The most valuable wisdom is ...

The most valuable wisdom is often gained through experience.

More phrases

If one does not know to which port one is sailing, no wind is favorable.
What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.
We are masters of the unsaid words, but slaves of those we let slip out.
I have always found that mercy bears richer fruits than strict justice.
A lie gets halfway around the world before the truth has a chance to get its pants on.

Quotes from the same author

The warrior's spirit is not measured by the size of their weapon, but by the strength of their heart.
A true warrior doesn't fight because they hate what's in front of them, but because they love what's behind them.
A warrior is not defined by their strength, but by their perseverance.
Warriors are not born, they are forged through adversity and challenge.
The true test of a warrior is not how they fight when they win, but how they fight when they lose.