Perseverance quotes:

A drop of water penetrates a stone, not because of its strength, but because of its perseverance and perseverance. —— Latimer

Strength is not synonymous with physical strength. Real strength is produced by perseverance and iron will. ——Abdullah Hussein

Quotes on keeping one's promises:

It is more important for a person to keep his promises than to guard his property.

——(France) Molière