源です

is the source

→ 源
phrase Rare #36,838
is the source 源 means “source” or “origin,” and です is the polite form of “is.” It often refers to the source of something abstract, such as power, life, love, or crime.
JA: 水はすべての生命の源です。
EN: Water is the source of all life.

愛することは生命の源です

Love is the source of life.

太陽は光と熱生命の永遠の源です

The sun is the eternal source of light, heat, and life.