The Blessed Buddha once said:

Sabbe sattā, sabbe pānā,
sabbe bhūtā ca kevalā,
sabbe bhadrāni passantu.
Mā kañci pāpamāgamā.
May all creatures, all living things,
all beings
without any exception,
experience
good happiness only!
May they not
fall into any harm.
Aṅguttara
Nikāya 4.67

Solitude is
happiness for one, who is content,
who has heard
the Dhamma and clearly sees.
Non-violence
is happiness in this world:
Harmlessness
towards all living beings.
Udana 10

HARMLESS
The one, who has left violence,
who never harm any being,
whether they are trembling or still,
who never kill, nor causes to kill,
such one, harmless, is a Holy One.
Dhammapada
405

More on
Harmlessness
(Ahimsā):
Harmlessness_and_Tolerance,
Patient_is_Tolerance,
Not_Killing,
Bon_Benevolence,
Kamma_leading_to_short_&_long_life,
Blessing_all_Beings_by_Bliss