Rust…

Just as iron rusts from disuse…even so does inaction spoil the intellect. Leonardo da Vinci

Don’t store up treasures here on earth, where moths eat them and rust destroys them, and where thieves break in and steal. Store your treasures in heaven, where moths and rust cannot destroy, and thieves do not break in and steal. Wherever your treasure is, there the desires of your heart will also be. Matthew 6:19-21 NLT

Prefer diligence before idleness unless you esteem rust above brightness. Plato