Tiruvalluvar

“ The learning, which a man has acquired in one birth, will yield him pleasure during seven births.
399 - Their joy is joy of all the world, they see; thus more
The learners learn to love their cherished lore.
The learned will long (for more learning) , when they see that while it gives pleasure to themselves, the world also derives pleasure from it.
400 - Learning is excellence of wealth that none destroy;
To man nought else affords reality of joy.
Learning is the true imperishable riches; all other things are not riches. ”