The Art of Loving vs The principles of psychology: Which Should You Read?

Both live on shelves: Psychology

Cover of The Art of Loving

The Art of Loving Erich Fromm · 1956 ★★★★☆ 3.8 130 pages · ≈ 2 h 24 m · Challenging Find on Amazon

vs

Cover of The principles of psychology

The principles of psychology William James · 1890 ★★★★☆ 3.9 897 pages · ≈ 16 h 37 m · Demanding Find on Amazon

The verdict

Ratings are close: 3.8 vs 3.9 — either is a safe pick by score.
The Art of Loving is the quicker read — about 2 hours vs 16 for The principles of psychology.
The Art of Loving is the easier read (Challenging), The principles of psychology more demanding (Demanding).

Side by side