learn by heart , also: learn something (off) by heart

She nearly learned the whole phrase by heart, but it didn't make any sense.

Right now it was playing a soap commercial David had learned by heart.

If it would please you, I'll even learn them all by heart.

I learned it by heart for want of anything else to do.

Learning them by heart as if they were magic signs.

Back in school he had never been forced to learn things by heart.

I was never much good at learning things by heart myself.

She smiled up at him, learning his face by heart.

Every school child used to learn this poem by heart.

She is eight years old and learns everything by heart.