Dhammapada verses 64 and 65

64. Though all his life a fool associates with a wise man, he no more comprehends the Truth than a spoon tastes the flavor of the soup.

65. Though only for a moment a discerning person associates with a wise man, quickly he comprehends the Truth, just as the tongue tastes the flavor of the soup.

– Dhammapada V – Balavagga: The Fool 64 and 65