Sanskrit slokas in sanskrit script

Answer 1

You will find many Sanskrit Qutes on:
sanskrit-quote.blogspot.com

1.
श्लोकार्धेन प्रवक्ष्यामि यदुक्तं ग्रन्थकोटिभिः ।
परोपकारः पुण्याय पापाय परपीडनम् ॥
"What is stated by crores of volumes, I shall present by half a stanza - 'doing good to others is for merit and causing pain to others is for sin.'"
2.
न चोरहार्यं न च राजहार्यं न भ्रातृभाज्यं न च भारकारि।
व्यये कृते वर्धत एव नित्यं विद्याधनं सर्वधनप्रधानम् ॥
"It is not stolen by thieves, not seized by kings, not divided amongst brothers, and not heavy to carry. The more you spend, the more it flourishes always - The wealth of knowledge is the most important among all kinds of wealth."
3.
न कश्चिदपि जानाति
किं कस्य श्वो भविष्यति ।
अतः श्वः करणीयानि
कुर्यादद्धैव बुद्धिमान् ॥
"No one knows what will happen tomorrow. So, wise people do today what should be done tomorrow."

Answer 2

सर्वं खल्विदं ब्रह्म - "sarvam khalvidam brahma" अहिंसा परमो धर्मः - "ahimsa paramo dharma" सत्यमेव जयते - "satyameva jayate"