in and of themselves

Prepositional phrase

by themselves; with respect to their intrinsic or inherent nature without consideration of extraneous factors; per se, intrinsically, inherently

Japanese Meaning

それ自体として / 本質的に / 固有に / 独立して

The ideas, in and of themselves, aren't groundbreaking, but together they form a compelling theory.

そのアイデアはそれ自体では目新しくないが、組み合わさると説得力のある理論になる。

Sense（1）

by themselves; with respect to their intrinsic or inherent nature without consideration of extraneous factors; per se, intrinsically, inherently